Method of imbedding staples



Oct. 20, 1931. E. c. PITCHER METHOD OF IMBEDDING STAPLES Filed July 9,1928 INVENTOR.

ELMEI? C. P/ rah 24 A TTORN-EYS.

Patented Oct. 20, 1931 PATENT OFFICE ELMER C. PITCHER, OF HAYWARD,CALIFORNIA.

METHOD OF IMBEDIDING STAPLES Application filed July 9,

My invention relates to an improved method of imbedding staples, and itconsists in the combinations, constructions and arrange mentshereinafter described and claimed.

Up to the present time, it has been impos sible to secure a staple infiber-board unless the staple is driven entirely through the board andhas its ends bent over or clinched. l have found that a staple havingparallel 1e legs can be driven into the board the desired distance, andthen this staple can be locked in place if the center of the staple isstruck so as to bend this portion and cause the legs to swing outlaterally and bind them selves in the fiber-board. In other words, thelegs when so bent act as a wedge and the staple will withstandconsiderable pulling pressure before itwill give way.

An object is to form a base for the purpose 211 of holding plaster orstucco to the board, the staples acting as keys for securing the stuccoto the board.

The bending of the central portion of the staple downwardly not onlyswings the legs into a wedge-shaped position, but also brings thecentral portion into contact with the top of the fiber-board, and thisprevents the staple from being moved further into the fiber or softwood.

Other objects and advantages will appear as the specification proceeds,and the novel features will be particularly pointed out in what Ihereinafter claim.

My invention is illustrated in the accompanying drawings forming a partof this application, in which Figures 1, 2 and 3 are schematic viewsshowing how the staple is driven into the fiberboard and secured inplace. I In carrying out my invention, I make use of a staple indicatedgenerally at 1 in Figures 1. 2 and 3. This staple has a cross-piece 2and legs 3. The legs normally extend parallel with respect to eachother.

The staple 1 shown in Figure 1 is initially forced into a board 7 andwill assume the position shown in Figure 2 after this operation.

Figure 3 shows how the cross-piece 2 is bent until the central portionthereof contacts with the top of the fiber-board 7. This 1928. SerialNo. 291,266.

movement will cause the upper ends of the legs 33 to move in at thepoints X and to move outwardly at their extremities, which lattermovement causes the extremities to force their way in a lateral direct-ion into the fiber-board 7. The legs will assume the position shown inFigure 3, and will act as a wedge for preventing the ready withdrawal ofthe staple from the board. Considerable force is needed for withdrawingthe staple. whereas if the legs extended into the board as shown inFigure 2, a far less force could remove the staple.

I claim:

1. The herein described. method of securing a staple in a member, whichconsists in partially embedding the legs of the staple in the member,and then flaring the legs outwardly at an angle.

2. The herein described method of securing; a staple to a member, whichconsists in partially embedding the legs of the staple in the member.and striking the center of the staple for causing the legs to spread andbecome wedged in the member and the center to contact with the top ofthe member.

3. The herein described method of securing a staple to a member, whichconsists in partially embedding the legs of the staple in the member,and striking the center of the staple for causing the legs to spread andbecome wedged in the member.

4. The herein described method of securinc a staple in a supportingmember, which consists in driving the staple legs into the member andthen. flaring the legs at an angle so as to become wedged in the member.

ELMER C. PITCHER.

